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Submission #524287

# Submission time Handle Problem Language Result Execution time Memory
524287 2022-02-09T02:05:00 Z Turkhuu Connecting Supertrees (IOI20_supertrees) C++17
100 / 100
 185 ms 28072 KB 
#include "supertrees.h"
#include <vector>
#include <bits/stdc++.h>

using namespace std;

struct dsu{
  int n;
  vector<int> size, parent;
 
  dsu(int _n) : n(_n), size(n, 1), parent(n){
    iota(parent.begin(), parent.end(), 0);
  }
 
  int get(int a){
    return a == parent[a] ? a : parent[a] = get(parent[a]);
  }
 
  bool unite(int b, int a){
    a = get(a);
    b = get(b);
    if(a == b){
      return 0;
    }
    size[b] += size[a];
    parent[a] = b;
    return 1;
  }
};

int construct(vector<vector<int>> a){
	int n = a.size();
  vector<vector<int>> ans(n, vector<int>(n, 0));
	vector<vector<int>> v1(n),v2(n);
	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			if(a[i][j] == 1){
				v1[i].push_back(j);
				v1[j].push_back(i);

			} else if(a[i][j] == 2){
				v2[i].push_back(j);
        v2[j].push_back(i);
			} else if(a[i][j] == 3){
        return 0;
      }
		}
	}
  dsu s(n);
  for(int i = 0; i < n; i++){
    if(s.parent[i] == i){
      for(int j = 0; j < n; j++){
        for(int k : v1[i]){
          if(a[k][j] != a[i][j]){
            return 0;
          }
          ans[i][k] = 1;
          ans[k][i] = 1;
          s.unite(i, k);
        }
      }
    }
  }
  vector<bool> b(n, false);
  for(int i = 0; i < n; i++){
    if(b[s.parent[i]]){
      continue;
    }
    b[i] = true;
    int cur = i;
    for(int j : v2[i]){
      if(s.parent[j] != j){
        if(a[i][s.parent[j]] != 2){
          return 0;
        }
        continue;
      }
      for(int k : v2[j]){
        if(a[i][k] == 0 || (a[i][k] == 1 && s.parent[k] != i) || (a[i][k] == 2 && s.parent[k] == i)){
          return 0;
        }
      }
      for(int k : v2[i]){
        if(a[j][k] == 0 || (a[j][k] == 1 && s.parent[k] != j) || (a[j][k] == 2 && s.parent[k] == i)){
          return 0;
        }
      }
      ans[cur][j] = 1;
      ans[j][cur] = 1;
      b[j] = true;
      cur = j;
    }
    if(cur == i){
      continue;
    }
    if(ans[i][cur]){
      return 0;
    }
    ans[i][cur] = 1;
    ans[cur][i] = 1;
  }
	build(ans);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1432 KB Output is correct
7 Correct 179 ms 28068 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1432 KB Output is correct
7 Correct 179 ms 28068 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1204 KB Output is correct
13 Correct 161 ms 23956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 936 KB Output is correct
17 Correct 104 ms 16876 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 46 ms 6304 KB Output is correct
21 Correct 169 ms 24588 KB Output is correct
22 Correct 164 ms 24004 KB Output is correct
23 Correct 183 ms 26052 KB Output is correct
24 Correct 171 ms 23976 KB Output is correct
25 Correct 75 ms 14572 KB Output is correct
26 Correct 65 ms 14148 KB Output is correct
27 Correct 176 ms 27124 KB Output is correct
28 Correct 158 ms 24008 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 292 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 7 ms 1160 KB Output is correct
9 Correct 159 ms 23976 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 7 ms 1484 KB Output is correct
13 Correct 167 ms 28072 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 4 ms 972 KB Output is correct
17 Correct 84 ms 17128 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 41 ms 6312 KB Output is correct
22 Correct 161 ms 24552 KB Output is correct
23 Correct 169 ms 24044 KB Output is correct
24 Correct 173 ms 27076 KB Output is correct
25 Correct 66 ms 14148 KB Output is correct
26 Correct 70 ms 14572 KB Output is correct
27 Correct 158 ms 24004 KB Output is correct
28 Correct 169 ms 26096 KB Output is correct
29 Correct 67 ms 14068 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 292 KB Output is correct
4 Correct 42 ms 6336 KB Output is correct
5 Correct 177 ms 24516 KB Output is correct
6 Correct 159 ms 24004 KB Output is correct
7 Correct 185 ms 26156 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 40 ms 6316 KB Output is correct
10 Correct 165 ms 24484 KB Output is correct
11 Correct 158 ms 24008 KB Output is correct
12 Correct 168 ms 27172 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 41 ms 6316 KB Output is correct
17 Correct 159 ms 24548 KB Output is correct
18 Correct 163 ms 24644 KB Output is correct
19 Correct 160 ms 24172 KB Output is correct
20 Correct 158 ms 24060 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1432 KB Output is correct
7 Correct 179 ms 28068 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1204 KB Output is correct
13 Correct 161 ms 23956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 936 KB Output is correct
17 Correct 104 ms 16876 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 46 ms 6304 KB Output is correct
21 Correct 169 ms 24588 KB Output is correct
22 Correct 164 ms 24004 KB Output is correct
23 Correct 183 ms 26052 KB Output is correct
24 Correct 171 ms 23976 KB Output is correct
25 Correct 75 ms 14572 KB Output is correct
26 Correct 65 ms 14148 KB Output is correct
27 Correct 176 ms 27124 KB Output is correct
28 Correct 158 ms 24008 KB Output is correct
29 Correct 0 ms 292 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 7 ms 1160 KB Output is correct
37 Correct 159 ms 23976 KB Output is correct
38 Correct 1 ms 288 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 7 ms 1484 KB Output is correct
41 Correct 167 ms 28072 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 4 ms 972 KB Output is correct
45 Correct 84 ms 17128 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 41 ms 6312 KB Output is correct
50 Correct 161 ms 24552 KB Output is correct
51 Correct 169 ms 24044 KB Output is correct
52 Correct 173 ms 27076 KB Output is correct
53 Correct 66 ms 14148 KB Output is correct
54 Correct 70 ms 14572 KB Output is correct
55 Correct 158 ms 24004 KB Output is correct
56 Correct 169 ms 26096 KB Output is correct
57 Correct 67 ms 14068 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 0 ms 296 KB Output is correct
60 Correct 4 ms 1044 KB Output is correct
61 Correct 87 ms 18724 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 0 ms 204 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 43 ms 6256 KB Output is correct
66 Correct 68 ms 14636 KB Output is correct
67 Correct 69 ms 14700 KB Output is correct
68 Correct 70 ms 14328 KB Output is correct
69 Correct 77 ms 14060 KB Output is correct

Subtask #6
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 296 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 8 ms 1432 KB Output is correct
7 Correct 179 ms 28068 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 10 ms 1204 KB Output is correct
13 Correct 161 ms 23956 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 4 ms 936 KB Output is correct
17 Correct 104 ms 16876 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 46 ms 6304 KB Output is correct
21 Correct 169 ms 24588 KB Output is correct
22 Correct 164 ms 24004 KB Output is correct
23 Correct 183 ms 26052 KB Output is correct
24 Correct 171 ms 23976 KB Output is correct
25 Correct 75 ms 14572 KB Output is correct
26 Correct 65 ms 14148 KB Output is correct
27 Correct 176 ms 27124 KB Output is correct
28 Correct 158 ms 24008 KB Output is correct
29 Correct 0 ms 292 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 0 ms 204 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 7 ms 1160 KB Output is correct
37 Correct 159 ms 23976 KB Output is correct
38 Correct 1 ms 288 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 7 ms 1484 KB Output is correct
41 Correct 167 ms 28072 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 4 ms 972 KB Output is correct
45 Correct 84 ms 17128 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 41 ms 6312 KB Output is correct
50 Correct 161 ms 24552 KB Output is correct
51 Correct 169 ms 24044 KB Output is correct
52 Correct 173 ms 27076 KB Output is correct
53 Correct 66 ms 14148 KB Output is correct
54 Correct 70 ms 14572 KB Output is correct
55 Correct 158 ms 24004 KB Output is correct
56 Correct 169 ms 26096 KB Output is correct
57 Correct 67 ms 14068 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 1 ms 292 KB Output is correct
61 Correct 42 ms 6336 KB Output is correct
62 Correct 177 ms 24516 KB Output is correct
63 Correct 159 ms 24004 KB Output is correct
64 Correct 185 ms 26156 KB Output is correct
65 Correct 0 ms 204 KB Output is correct
66 Correct 40 ms 6316 KB Output is correct
67 Correct 165 ms 24484 KB Output is correct
68 Correct 158 ms 24008 KB Output is correct
69 Correct 168 ms 27172 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 0 ms 204 KB Output is correct
73 Correct 41 ms 6316 KB Output is correct
74 Correct 159 ms 24548 KB Output is correct
75 Correct 163 ms 24644 KB Output is correct
76 Correct 160 ms 24172 KB Output is correct
77 Correct 158 ms 24060 KB Output is correct
78 Correct 0 ms 204 KB Output is correct
79 Correct 0 ms 296 KB Output is correct
80 Correct 4 ms 1044 KB Output is correct
81 Correct 87 ms 18724 KB Output is correct
82 Correct 0 ms 204 KB Output is correct
83 Correct 0 ms 204 KB Output is correct
84 Correct 0 ms 204 KB Output is correct
85 Correct 43 ms 6256 KB Output is correct
86 Correct 68 ms 14636 KB Output is correct
87 Correct 69 ms 14700 KB Output is correct
88 Correct 70 ms 14328 KB Output is correct
89 Correct 77 ms 14060 KB Output is correct
90 Correct 0 ms 204 KB Output is correct
91 Correct 0 ms 204 KB Output is correct
92 Correct 3 ms 844 KB Output is correct
93 Correct 69 ms 14060 KB Output is correct
94 Correct 1 ms 204 KB Output is correct
95 Correct 0 ms 204 KB Output is correct
96 Correct 0 ms 204 KB Output is correct
97 Correct 17 ms 3688 KB Output is correct
98 Correct 65 ms 14148 KB Output is correct
99 Correct 76 ms 14312 KB Output is correct
100 Correct 64 ms 14148 KB Output is correct
101 Correct 64 ms 14068 KB Output is correct
102 Correct 63 ms 14076 KB Output is correct
103 Correct 63 ms 14060 KB Output is correct
104 Correct 64 ms 14072 KB Output is correct
105 Correct 79 ms 14072 KB Output is correct